Degree Department

States

A Correlation of Humus with Water Content and Crop Rotation in San Saba and Denton Clays, Denton County, Texas (open access)

A Correlation of Humus with Water Content and Crop Rotation in San Saba and Denton Clays, Denton County, Texas

A study of the humus content and the water content of San Saba clay and Denton clay. Studies show that the physical properties of soil are conducive to moisture retention and the availability of moisture to plants.
Date: August 1939
Creator: Culwell, John Walton
System: The UNT Digital Library
A Comparison of Exotic and Domestic Species in American Zoological Gardens and their Practical Educational Value (open access)

A Comparison of Exotic and Domestic Species in American Zoological Gardens and their Practical Educational Value

This thesis presents a comparison of zoos and zoological gardens in the United States, Europe, and Asia. After an examination of these entities, the appeal and educational value of particular species is determined.
Date: August 1940
Creator: Elliott, Zola
System: The UNT Digital Library